Dust bag for vacuum cleaners



Patented Nov. 17, 1925.

UNITED STATES CLARAl M. JAQUITH, OF DENVER, COLORADO.

DUST BAG FORVACUUM CLEANERS.

Application med May 28,192.4. serial No. 716,291.

To all whom it may concer/n:

Be it known that I, CLARA M. JAQUITH,

a citizen of the United States, residing at Denver, the city and countyof Denver and -State of Colorado, have. invented certain new and usefulImprovements in Dust Bags for Vacuum Cleaners; and I do declare thefollowing to bev a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the characters of reference markedthereon, which form a. part of this specification. V

This invention relates to improvements in dust bags for vacuum cleaners.

It is well known to all who employ ordi.- nary vacuum cleaners thatthese are far from being as cleanly! and as sanitary as they should be.The main reason for this is that the dust is discharged from the blowerinto a bag, the w`alls of which mustbe sufficiently porous to permit theair to escape. The walls of the dust bag act as a strainer whosefunction it is t'o-retain the dust while the air escapes through thewalls and into theroom. It, is, of course, impossible, with the ordinarycloth` bag, to remove all of the dust from `the`air, as much of the dustand dirt is in the form of an impalpable powder so fine that it passesfreely through the meshesbet-ween the threads. This fine dust o-ftencarries the disease germs which by this means become widely scattered.The proof that dust passes through the walls of the bag can readily beproduced, as it is only necessary to carefully dust articles offurniture before the cleaner is used and then to note ho-w much dustsettles upon this furniture after the cleaning is over.

It is evident that the ideal bag would be one that would remove allofthe dust from the air so that. the latter, as it', reentered the room,would be entirely clean. It has, however, been impossible to producemate' rial that will screen the dust out of the air completely.

It is the. object of this invention to pro duce a dust bag that shall beso constructed that the air which leaves the same shall be filtered tosuch an extent that it is for all practical considerations, clean.

My invention, briefiy described, consists in making the bag of veryclosely woven fabric which is practically air-tight or the the air topass through it.

fabric may be rubberized or filled with some material that renders itair-tight. For the purpose of permitting the air to leave the bag asfast as it enters, I provide a vent which is provided with an airfiltering means. This vent/is preferably formed inA the manner whichwill be hereinafter more fully described and comprises a box which isadapted to contain filtering material, such as a wet sponge, wet felt orcotton waste or any other suitable filtering `mate-rial. The box ispro-vided with means which will cause the air to travel through thefiltering material.

In order more clearly to describe my invention, I shall have referenceto the accompanying drawing in which one embodiment thereof is shown,and in which:

Fig. 1 is a. side 'elevation of a vacuum cleaner showing the bagconstructed in accordance with my invention;

Fig. 2 is a section of the air filtering device; and

Fig. 3 is a view similar to that of Fig. 2, but showing the filteringmaterial in place. Numeral 1 represents a dust bag which may be similarin shape and size to those now in common use. This'gbag diers from'those 4ordinarily employed in this, that it is air-tight orsubstantially so. The vent- 2, through which the air leaves the bag,comprises a metal box having a wall 3 pirovided with outwardly extendingannular flanges 4 and 5 between which the material 6 of the bag isclamped as by means of rivets 7. The bottom 8 of the box is bentinwardly and has a central opening 9 which is closed 'by a woven wirescreen 10 or which may be closed by any other suitable foraminatedmaterial.

A cover comprising a ring 11, to which is secured a woven wire top l2,serves to close the box. The box just described is designed to containthe filtering material 13 which may be a wet sponge, wet felt or wetcotton waste. In fact, the filtering material may be any suitablematerial that will'permit of the box is curved upwardly towards thecover, the air will enter the filtering material close to the center ofthe same and will be obliged to pass through it instead of Since thebottom It is evident that many specifically different designs or filtersmay be invented, any one of which will serve the same purpose as the onedescribed, and I wish it tobe understood that the one described aboveis'illustrative merely and is to be regarded as an element of thecombination.

From the above, it is apparent that I have produced an improved dust bagfor vacuum cleaners that will'ilter the air as it leaves the bag so asto remove from it all dust and dirt, thereby converting the vacuumcleaner into really cleanly and sanitary devices.

Having now described my invention, what I claim as new is:

l. A dust bag for vacuum cleaners comprising, in combination, aflexible, substantially air tight fabric bag adapted to be secured tothe exhaust opening of a vacuum cleaner and to receive the dust and dirtfrom the latter, said bag having an opening, a metal containerprojecting from opposite sides of the wall of said fabric bag.

and located lwithin the opening and secured to the edges thereof bymeans forming an air tight seal, said container being adapted tovreceive a filter medium, the top and bottom of said container beingforaminated whereby air may pass outwardly through the container.

2. A filter device adapted to be attached to the dust bag of a vacuumcleaner, comprising a box having an integral bottom portion providedwith an opening, said bottom projecting inwardly into the box, theopening in sald bottom being closed by a screen, said box having aremovable comprising a ringlike member adapted to telescope with thesides of the box and a piece of screen connected to the ringlike member,said box being adapted to receive a wet sponge through which air mustpass when leaving the bag and to which the dust contained in the airwill adhere.

3. A filtering device adapted to `be attached to a dust bag comprising,in combination, a cylindrical box having a bottom member that projectsinto the box, said bottom member having an, opening closed byreticulated material, a cover member adapted to be attached to the openend of the box, said cover member consisting of a ring to yone edge ofwhich a screen member is attached, said box being adapted to receive afilter medium consisting of a sponge bers of L-shaped cross sectionsecured to the outside of the box and adapted to clamp between them thematerial to which the device is attached. 4. A dust bag for vacuumcleaners formed of substantially air-tight fabric having an opening forthe escape of air, a metal container located in the opening and securedto the material of the bag by means forming an air tight seal, saidcontainer having an inwardly convex bottom member provided withopenings, and an outwardly convex cover member also provided Withopenings.

In testimony whereof I aflix my signature.

v CLARA M. J AQUITH.

. that has been moistened, and two ring mem-

